Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2015 Anton Ivanov (aivanov@{brocade.com,kot-begemot.co.uk}) * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de) * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) */ #ifndef __OS_H__ #define __OS_H__ #include <irq_user.h> #include <longjmp.h> #include <mm_id.h> /* This is to get size_t */ #ifndef __UM_HOST__ #include <linux/types.h> #else #include <sys/types.h> #endif #define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR)) #define OS_TYPE_FILE 1 #define OS_TYPE_DIR 2 #define OS_TYPE_SYMLINK 3 #define OS_TYPE_CHARDEV 4 #define OS_TYPE_BLOCKDEV 5 #define OS_TYPE_FIFO 6 #define OS_TYPE_SOCK 7 /* os_access() flags */ #define OS_ACC_F_OK 0 /* Test for existence. */ #define OS_ACC_X_OK 1 /* Test for execute permission. */ #define OS_ACC_W_OK 2 /* Test for write permission. */ #define OS_ACC_R_OK 4 /* Test for read permission. */ #define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */ #ifdef CONFIG_64BIT #define OS_LIB_PATH "/usr/lib64/" #else #define OS_LIB_PATH "/usr/lib/" #endif #define OS_SENDMSG_MAX_FDS 8 /* * types taken from stat_file() in hostfs_user.c * (if they are wrong here, they are wrong there...). */ struct uml_stat { int ust_dev; /* device */ unsigned long long ust_ino; /* inode */ int ust_mode; /* protection */ int ust_nlink; /* number of hard links */ int ust_uid; /* user ID of owner */ int ust_gid; /* group ID of owner */ unsigned long long ust_size; /* total size, in bytes */ int ust_blksize; /* blocksize for filesystem I/O */ unsigned long long ust_blocks; /* number of blocks allocated */ unsigned long ust_atime; /* time of last access */ unsigned long ust_mtime; /* time of last modification */ unsigned long ust_ctime; /* time of last change */ }; struct openflags { unsigned int r : 1; unsigned int w : 1; unsigned int s : 1; /* O_SYNC */ unsigned int c : 1; /* O_CREAT */ unsigned int t : 1; /* O_TRUNC */ unsigned int a : 1; /* O_APPEND */ unsigned int e : 1; /* O_EXCL */ unsigned int cl : 1; /* FD_CLOEXEC */ }; #define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \ .t = 0, .a = 0, .e = 0, .cl = 0 }) static inline struct openflags of_read(struct openflags flags) { flags.r = 1; return flags; } static inline struct openflags of_write(struct openflags flags) { flags.w = 1; return flags; } static inline struct openflags of_rdwr(struct openflags flags) { return of_read(of_write(flags)); } static inline struct openflags of_set_rw(struct openflags flags, int r, int w) { flags.r = r; flags.w = w; return flags; } static inline struct openflags of_sync(struct openflags flags) { flags.s = 1; return flags; } static inline struct openflags of_create(struct openflags flags) { flags.c = 1; return flags; } static inline struct openflags of_trunc(struct openflags flags) { flags.t = 1; return flags; } static inline struct openflags of_append(struct openflags flags) { flags.a = 1; return flags; } static inline struct openflags of_excl(struct openflags flags) { flags.e = 1; return flags; } static inline struct openflags of_cloexec(struct openflags flags) { flags.cl = 1; return flags; } /* file.c */ extern int os_stat_file(const char *file_name, struct uml_stat *buf); extern int os_stat_fd(const int fd, struct uml_stat *buf); extern int os_access(const char *file, int mode); extern int os_set_exec_close(int fd); extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); extern int os_get_ifname(int fd, char *namebuf); extern int os_set_slip(int fd); extern int os_mode_fd(int fd, int mode); extern int os_fsync_file(int fd); extern int os_seek_file(int fd, unsigned long long offset); extern int os_open_file(const char *file, struct openflags flags, int mode); extern int os_read_file(int fd, void *buf, int len); extern int os_write_file(int fd, const void *buf, int count); extern int os_sync_file(int fd); extern int os_file_size(const char *file, unsigned long long *size_out); extern int os_pread_file(int fd, void *buf, int len, unsigned long long offset); extern int os_pwrite_file(int fd, const void *buf, int count, unsigned long long offset); extern int os_file_modtime(const char *file, long long *modtime); extern int os_pipe(int *fd, int stream, int close_on_exec); extern int os_set_fd_async(int fd); extern int os_clear_fd_async(int fd); extern int os_set_fd_block(int fd, int blocking); extern int os_accept_connection(int fd); extern int os_create_unix_socket(const char *file, int len, int close_on_exec); extern int os_shutdown_socket(int fd, int r, int w); extern void os_close_file(int fd); extern int os_rcv_fd(int fd, int *helper_pid_out); extern int os_connect_socket(const char *name); extern int os_file_type(char *file); extern int os_file_mode(const char *file, struct openflags *mode_out); extern int os_lock_file(int fd, int excl); extern void os_flush_stdout(void); extern unsigned os_major(unsigned long long dev); extern unsigned os_minor(unsigned long long dev); extern unsigned long long os_makedev(unsigned major, unsigned minor); extern int os_falloc_punch(int fd, unsigned long long offset, int count); extern int os_falloc_zeroes(int fd, unsigned long long offset, int count); extern int os_eventfd(unsigned int initval, int flags); extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len, const int *fds, unsigned int fds_num); int os_poll(unsigned int n, const int *fds); /* start_up.c */ extern void os_early_checks(void); extern void os_check_bugs(void); extern void check_host_supports_tls(int *supports_tls, int *tls_min); extern void get_host_cpu_features( void (*flags_helper_func)(char *line), void (*cache_helper_func)(char *line)); /* mem.c */ extern int create_mem_file(unsigned long long len); /* process.c */ extern unsigned long os_process_pc(int pid); extern int os_process_parent(int pid); extern void os_alarm_process(int pid); extern void os_stop_process(int pid); extern void os_kill_process(int pid, int reap_child); extern void os_kill_ptraced_process(int pid, int reap_child); extern int os_getpid(void); extern int os_getpgrp(void); extern void init_new_thread_signals(void); extern int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, int r, int w, int x); extern int os_protect_memory(void *addr, unsigned long len, int r, int w, int x); extern int os_unmap_memory(void *addr, int len); extern int os_drop_memory(void *addr, int length); extern int can_drop_memory(void); extern int os_mincore(void *addr, unsigned long len); /* execvp.c */ extern int execvp_noalloc(char *buf, const char *file, char *const argv[]); /* helper.c */ extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv); extern int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, unsigned long *stack_out); extern int helper_wait(int pid); /* umid.c */ extern int umid_file_name(char *name, char *buf, int len); extern int set_umid(char *name); extern char *get_umid(void); /* signal.c */ extern void timer_set_signal_handler(void); extern void set_sigstack(void *sig_stack, int size); extern void set_handler(int sig); extern void send_sigio_to_self(void); extern int change_sig(int signal, int on); extern void block_signals(void); extern void unblock_signals(void); extern int um_set_signals(int enable); extern int um_set_signals_trace(int enable); extern int os_is_signal_stack(void); extern void deliver_alarm(void); extern void register_pm_wake_signal(void); extern void block_signals_hard(void); extern void unblock_signals_hard(void); extern void mark_sigio_pending(void); /* util.c */ extern void stack_protections(unsigned long address); extern int raw(int fd); extern void setup_machinename(char *machine_out); extern void setup_hostinfo(char *buf, int len); extern ssize_t os_getrandom(void *buf, size_t len, unsigned int flags); extern void os_dump_core(void) __attribute__ ((noreturn)); extern void um_early_printk(const char *s, unsigned int n); extern void os_fix_helper_signals(void); extern void os_info(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); extern void os_warn(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); /* time.c */ extern void os_idle_sleep(void); extern int os_timer_create(void); extern int os_timer_set_interval(unsigned long long nsecs); extern int os_timer_one_shot(unsigned long long nsecs); extern void os_timer_disable(void); extern long long os_persistent_clock_emulation(void); extern long long os_nsecs(void); /* skas/mem.c */ extern long run_syscall_stub(struct mm_id * mm_idp, int syscall, unsigned long *args, long expected, void **addr, int done); extern long syscall_stub_data(struct mm_id * mm_idp, unsigned long *data, int data_count, void **addr, void **stub_addr); extern int map(struct mm_id * mm_idp, unsigned long virt, unsigned long len, int prot, int phys_fd, unsigned long long offset, int done, void **data); extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len, int done, void **data); extern int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len, unsigned int prot, int done, void **data); /* skas/process.c */ extern int is_skas_winch(int pid, int fd, void *data); extern int start_userspace(unsigned long stub_stack); extern int copy_context_skas0(unsigned long stack, int pid); extern void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs); extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void)); extern void switch_threads(jmp_buf *me, jmp_buf *you); extern int start_idle_thread(void *stack, jmp_buf *switch_buf); extern void initial_thread_cb_skas(void (*proc)(void *), void *arg); extern void halt_skas(void); extern void reboot_skas(void); /* irq.c */ extern int os_waiting_for_events_epoll(void); extern void *os_epoll_get_data_pointer(int index); extern int os_epoll_triggered(int index, int events); extern int os_event_mask(enum um_irq_type irq_type); extern int os_setup_epoll(void); extern int os_add_epoll_fd(int events, int fd, void *data); extern int os_mod_epoll_fd(int events, int fd, void *data); extern int os_del_epoll_fd(int fd); extern void os_set_ioignore(void); extern void os_close_epoll_fd(void); extern void um_irqs_suspend(void); extern void um_irqs_resume(void); /* sigio.c */ extern int add_sigio_fd(int fd); extern int ignore_sigio_fd(int fd); extern void maybe_sigio_broken(int fd); extern void sigio_broken(int fd); /* * unlocked versions for IRQ controller code. * * This is safe because it's used at suspend/resume and nothing * else is running. */ extern int __add_sigio_fd(int fd); extern int __ignore_sigio_fd(int fd); /* prctl.c */ extern int os_arch_prctl(int pid, int option, unsigned long *arg2); /* tty.c */ extern int get_pty(void); /* sys-$ARCH/task_size.c */ extern unsigned long os_get_top_address(void); long syscall(long number, ...); /* irqflags tracing */ extern void block_signals_trace(void); extern void unblock_signals_trace(void); extern void um_trace_signals_on(void); extern void um_trace_signals_off(void); /* time-travel */ extern void deliver_time_travel_irqs(void); #endif |